The biggest reveal in the final Captain America: Civil War trailer was most certainly Spider-Man’s first-time MCU appearance. The fans have been waiting for him ever since the MCU concept first emerged, and every new week without the reveal just increased the fans’ expectations.

Were these expectations met? Well, that really isn't the point of this list. The point is to see what happened up to the time of this big Civil War reveal, and to shed some light on the less obvious details in the trailer. And, aside from the answer to the most important question of who will ultimately win the fight between Iron Man and the Winter Soldier, there’s one question that even now remains unanswered.

There is a scene in the trailer in which Captain America, Iron Man and Bucky Barnes fight. It can be argued that it isn't the final fight between them "“ but there is something happening in the background. Better yet, someone can be seen in the background.

At first the fans can believe that the most obvious answer is also the true one. But, at a closer inspection, those same fans will realize that they haven't got a clue as to who that person is and what is he or she is doing there.

Obviously, from here on you can expect spoilers!